公开(公告)号：US11927378B2

公开(公告)日：2024-03-12

申请号：US18057270

申请日：2022-11-21

Applicant: ROLLS-ROYCE plc

Inventor： Chloe J. Palmer ,  Ian M. Bunce

IPC: F25B9/06 ,  F25B9/00 ,  F25B49/02 ,  G01N25/12

CPC classification number: F25B49/02 ,  F25B9/008 ,  F25B9/06 ,  G01N25/12 ,  F25B2309/061 ,  F25B2600/2515

Abstract: A sensor assembly is shown for sensing a crossing of the critical point in a system utilising a working fluid in a transcritical cycle passing through the critical point. A first broadband acoustic sensor is located upstream of a component and a second broadband acoustic sensor is located downstream of the component, each of which are arranged to detect high-frequency and low-frequency sounds caused by the crossing of the critical point. A flow regulation device regulates flow of working fluid through the component in response to the output of one or both of the first broadband acoustic sensor and the second broadband acoustic sensor, thereby adjusting the location of the crossing of the critical point.